Uranium diffusion in metals used in nuclear facilities - A new approach
- Autores
- Perez, Rodolfo Ariel
- Año de publicación
- 2017
- Idioma
- inglés
- Tipo de recurso
- artículo
- Estado
- versión publicada
- Descripción
- Diffusion at infinite dilution of U in metals, with particular emphasis in those used in nuclear facilities, is revisited. Early works present some particularities such as activation enthalpies lower than the vacancy formation enthalpy in the matrix, large differences with self-diffusion in the base material, up to four orders of magnitude differences between measurements performed by different authors in similar temperature ranges, etc. In particular U self-diffusion was qualified as abnormal when compared with other metals. Recent studies by means of á-spectrometry reveal a normal behaviour: Activation enthalpies and pre-exponential factors similar to the self-diffusion one and diffusion coefficient values in the same order of magnitude than self-diffusion. The possible influence of short circuits, impurities and/or uncertainties in the techniques used in the early works is discussed in order to explain the differences obtained.
Fil: Perez, Rodolfo Ariel. Comisión Nacional de Energía Atómica; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina - Materia
-
Diffusion
Nuclear Materials
Uranium
Α-Spectrometry - Nivel de accesibilidad
- acceso abierto
- Condiciones de uso
- https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
- Repositorio
- Institución
- Consejo Nacional de Investigaciones Científicas y Técnicas
- OAI Identificador
- oai:ri.conicet.gov.ar:11336/72663
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Uranium diffusion in metals used in nuclear facilities - A new approachPerez, Rodolfo ArielDiffusionNuclear MaterialsUraniumΑ-Spectrometryhttps://purl.org/becyt/ford/1.3https://purl.org/becyt/ford/1Diffusion at infinite dilution of U in metals, with particular emphasis in those used in nuclear facilities, is revisited. Early works present some particularities such as activation enthalpies lower than the vacancy formation enthalpy in the matrix, large differences with self-diffusion in the base material, up to four orders of magnitude differences between measurements performed by different authors in similar temperature ranges, etc. In particular U self-diffusion was qualified as abnormal when compared with other metals. Recent studies by means of á-spectrometry reveal a normal behaviour: Activation enthalpies and pre-exponential factors similar to the self-diffusion one and diffusion coefficient values in the same order of magnitude than self-diffusion. The possible influence of short circuits, impurities and/or uncertainties in the techniques used in the early works is discussed in order to explain the differences obtained.Fil: Perez, Rodolfo Ariel. Comisión Nacional de Energía Atómica; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; ArgentinaTrans Tech Publications2017-06info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/72663Perez, Rodolfo Ariel; Uranium diffusion in metals used in nuclear facilities - A new approach; Trans Tech Publications; Defect and Diffusion Forum; 375; 6-2017; 3-171012-0386CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/doi/10.4028/www.scientific.net/DDF.375.3info:eu-repo/semantics/altIdentifier/url/https://www.scientific.net/DDF.375.3info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-29T09:40:24Zoai:ri.conicet.gov.ar:11336/72663instacron:CONICETInstitucionalhttp://ri.conicet.gov.ar/Organismo científico-tecnológicoNo correspondehttp://ri.conicet.gov.ar/oai/requestdasensio@conicet.gov.ar; lcarlino@conicet.gov.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:34982025-09-29 09:40:25.219CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse |
dc.title.none.fl_str_mv |
Uranium diffusion in metals used in nuclear facilities - A new approach |
title |
Uranium diffusion in metals used in nuclear facilities - A new approach |
spellingShingle |
Uranium diffusion in metals used in nuclear facilities - A new approach Perez, Rodolfo Ariel Diffusion Nuclear Materials Uranium Α-Spectrometry |
title_short |
Uranium diffusion in metals used in nuclear facilities - A new approach |
title_full |
Uranium diffusion in metals used in nuclear facilities - A new approach |
title_fullStr |
Uranium diffusion in metals used in nuclear facilities - A new approach |
title_full_unstemmed |
Uranium diffusion in metals used in nuclear facilities - A new approach |
title_sort |
Uranium diffusion in metals used in nuclear facilities - A new approach |
dc.creator.none.fl_str_mv |
Perez, Rodolfo Ariel |
author |
Perez, Rodolfo Ariel |
author_facet |
Perez, Rodolfo Ariel |
author_role |
author |
dc.subject.none.fl_str_mv |
Diffusion Nuclear Materials Uranium Α-Spectrometry |
topic |
Diffusion Nuclear Materials Uranium Α-Spectrometry |
purl_subject.fl_str_mv |
https://purl.org/becyt/ford/1.3 https://purl.org/becyt/ford/1 |
dc.description.none.fl_txt_mv |
Diffusion at infinite dilution of U in metals, with particular emphasis in those used in nuclear facilities, is revisited. Early works present some particularities such as activation enthalpies lower than the vacancy formation enthalpy in the matrix, large differences with self-diffusion in the base material, up to four orders of magnitude differences between measurements performed by different authors in similar temperature ranges, etc. In particular U self-diffusion was qualified as abnormal when compared with other metals. Recent studies by means of á-spectrometry reveal a normal behaviour: Activation enthalpies and pre-exponential factors similar to the self-diffusion one and diffusion coefficient values in the same order of magnitude than self-diffusion. The possible influence of short circuits, impurities and/or uncertainties in the techniques used in the early works is discussed in order to explain the differences obtained. Fil: Perez, Rodolfo Ariel. Comisión Nacional de Energía Atómica; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina |
description |
Diffusion at infinite dilution of U in metals, with particular emphasis in those used in nuclear facilities, is revisited. Early works present some particularities such as activation enthalpies lower than the vacancy formation enthalpy in the matrix, large differences with self-diffusion in the base material, up to four orders of magnitude differences between measurements performed by different authors in similar temperature ranges, etc. In particular U self-diffusion was qualified as abnormal when compared with other metals. Recent studies by means of á-spectrometry reveal a normal behaviour: Activation enthalpies and pre-exponential factors similar to the self-diffusion one and diffusion coefficient values in the same order of magnitude than self-diffusion. The possible influence of short circuits, impurities and/or uncertainties in the techniques used in the early works is discussed in order to explain the differences obtained. |
publishDate |
2017 |
dc.date.none.fl_str_mv |
2017-06 |
dc.type.none.fl_str_mv |
info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion http://purl.org/coar/resource_type/c_6501 info:ar-repo/semantics/articulo |
format |
article |
status_str |
publishedVersion |
dc.identifier.none.fl_str_mv |
http://hdl.handle.net/11336/72663 Perez, Rodolfo Ariel; Uranium diffusion in metals used in nuclear facilities - A new approach; Trans Tech Publications; Defect and Diffusion Forum; 375; 6-2017; 3-17 1012-0386 CONICET Digital CONICET |
url |
http://hdl.handle.net/11336/72663 |
identifier_str_mv |
Perez, Rodolfo Ariel; Uranium diffusion in metals used in nuclear facilities - A new approach; Trans Tech Publications; Defect and Diffusion Forum; 375; 6-2017; 3-17 1012-0386 CONICET Digital CONICET |
dc.language.none.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
info:eu-repo/semantics/altIdentifier/doi/10.4028/www.scientific.net/DDF.375.3 info:eu-repo/semantics/altIdentifier/url/https://www.scientific.net/DDF.375.3 |
dc.rights.none.fl_str_mv |
info:eu-repo/semantics/openAccess https://creativecommons.org/licenses/by-nc-sa/2.5/ar/ |
eu_rights_str_mv |
openAccess |
rights_invalid_str_mv |
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/ |
dc.format.none.fl_str_mv |
application/pdf application/pdf |
dc.publisher.none.fl_str_mv |
Trans Tech Publications |
publisher.none.fl_str_mv |
Trans Tech Publications |
dc.source.none.fl_str_mv |
reponame:CONICET Digital (CONICET) instname:Consejo Nacional de Investigaciones Científicas y Técnicas |
reponame_str |
CONICET Digital (CONICET) |
collection |
CONICET Digital (CONICET) |
instname_str |
Consejo Nacional de Investigaciones Científicas y Técnicas |
repository.name.fl_str_mv |
CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicas |
repository.mail.fl_str_mv |
dasensio@conicet.gov.ar; lcarlino@conicet.gov.ar |
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1844613278734483456 |
score |
13.070432 |